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ru.linux
- RU.LINUX ---------------------------------------------------------------------
From : Slav Matveev 2:5020/968.222 19 Feb 2007 20:54:06
To : Alex Korchmar
Subject : ëèíóõ â øêîëå
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19 Feb 07 18:31, Alex Korchmar wrote to Slav Matveev:
SM>> ïîêàæè ìíå ïàñêàëèñòà, êîòîðûé íà Öå íàïèøåò
SM>> for( ; (c=getchar())!=EOF; putchar(c) );
SM>> èëè èíîé çàâîðîò â òàêîì æå äóõå.
AK> à òàê è íà C íèêòî óæå ìíîãî ëåò íå ïèøåò.
AK> Ñåé÷àñ íàïèøóò íîðìàëüíûé while, à çàäà÷ó îïòèìèçàöèè îñòàâÿò
AK> êîìïèëÿòîðó.
AK> À òîò êòî íàïèøåò òàê - ïîëó÷èò øòðàô, çà ïðîèçâîäñòâî
AK> íåóäîáî÷èòàåìîãî êîäà è èñïîëüçîâàíèå îïåðàòîðà öèêëà ñ ïðåäóñëîâèåì
AK> íå ïî íàçíà÷åíèþ.
for (;;) {
unsigned bit = size >> 1;
.....
íó èëè òàê, òîæå ÷èñòà ïàñêàëåâñêèé ïîäõîä:
for (pos = pci_find_capability(dev, PCI_CAP_ID_HT), ttl = 48;
pos && ttl;
pos = pci_find_next_capability(dev, pos, PCI_CAP_ID_HT), ttl--)
...
à âîò åùå, òîæå èíòåðåñíûé çàõîä â öèêë
for (counter = 0; counter < 150; mdelay(125), counter++) { ...
òåáå ñêàçàòü îòêóäà ýòîò êîä, ÷òî áû ìîã ïîäàòü êîìïëåéí
íà àôòîðîâ è ïîñòàâèòü èõ íà áàïêè? :)
õîòÿ äëÿ îöåíêè âëèÿíèÿ ÿçûêà äîñòàòî÷íî ïðîñòî âñïîìíèòü
val++ :)
AK>>> îïòèìèçèðîâàòü ÝÒÎ ëó÷øå ÷åì êîìïèëÿòîð óæå äàâíî íå â
AK>>> ñîñòîÿíèè.
SM>> Àëãîðèòì çà òåáÿ òîæå îïòèìèçàòîð êîìïèëÿòîðà ïîïðàâèò?
AK> àëãîðèòì â òàêèõ ìåëî÷àõ êàê ðàñïðåäåëåíèå îïåðàíäîâ ïî ðåãèñòðàì -
AK> äà, ïîïðàâèò, è ñàì òû ýòîãî ñäåëàòü íå ñóìååøü - ñîðâåøü ïàðíîå
AK> èñïîëíåíèå.
à ïîìíèøü áàéêó î êâàêå, ãäå ðóêàìè "ðàñïàðàëëåëèëè" öåëî÷èñëåííûå
âû÷èñëåíèÿ è ïëàâó÷êó?
AK> êàæäûì íîâûì êîìïèëÿòîðîì. Óâû, îáëàæàëñÿ - êîìïèëÿòîðû îêàçàëèñü
AK> ñòàáèëüíåé ïðîöåññîðîâ. Hó, â êà÷åñòâå ïðîðîêà îí ñåáÿ âðîäå è íå
AK> ïîçèöèîíèðîâàë.
Âñå ÷òî òàì ðàññêàçûâàåòñÿ - ýòî ñêîðåå ôóíäàìåíòàëüíàÿ íàóêà,
à íå ïðèêëàäíàÿ. Â òîì ïëàíå ÷òî íå çàâèñèò íè îò êîìïèëÿòîðîâ,
íè îò ïðîöåññîðîâ, íè îò áèáëèîòåê, íè îò îïåðàöèîííûõ ñèñòåì.
Slav.
--- GEcho 1.20/Pro
* Origin: -= PC's come and go, but PDP-11 are FOREVER!!! =- (2:5020/968.222)
Âåðíóòüñÿ ê ñïèñêó òåì, ñîðòèðîâàííûõ ïî: âîçðàñòàíèå äàòû óìåíüøåíèå äàòû òåìà àâòîð
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